The utility model relates to a tunnel support, including main part bracing piece, side direction bracing piece, sleeve and base, the main part bracing piece sets up on the base, sets up the hydraulicmeans who promotes the main part bracing piece and reciprocate on the base, and the well upper portion symmetry of main part bracing piece sets up the spout, and the end of side direction bracing piece sets up the bulb, and the spout is placed in to some of bulb, and the top and the below of spout set up the sleeve, sleeve and main part bracing piece threaded connection, and the distance permission sleeve between the two telescopic opposite faces blocking the bulb and unclamp. The utility model discloses following beneficial effect has: (1 ) support angle is adjustable, leads to the angle modulation that the side direction bracing piece had been realized to rotatory sleeve, has realized the altitude mixture control of support through hydraulic means, and the flexibility is good, (2 ) simple structure, the installation is convenient with the dismantlement, is favorable to impeing construction speed, (3 )Still can be used for supporting the rock mass of the section of excavation in the primary blasting stage to reduce the disturbance destruction that the blasting arouses, the range of application is wide.